Combine the strawberries and raspberries in a medium bowl. Drizzle with water and sprinkle with 1 tablespoon of the sugar. Gently toss until well combined.

Step 2

Place the remaining sugar on a large flat plate. Cut four 2cm-thick diagonal slices from the baguette. Spread one side of each baguette slice with the butter, then press buttered-side down into the sugar to coat. Repeat with the butter and sugar with the other side of the bread slices.

Step 3

Heat a large non-stick frying pan over high heat. Add the bread slices and cook for 1 minute each side or until golden brown.

Step 4

To serve, place a piece of sugar bread on a plate and spoon the berries over with a little syrup. Top with a dollop of mascarpone.